E+E Elektronik CDS 201 CO2,Relative Humidity and Room Temperature Sensor

Outstanding Measurement Performance

The CDS201 guarantees outstanding long-term performance for all three measurements:
CO2 ..  E+E dual wavelength NDIR technology automatically compensates for aging effects and ensures excellent stability. The temperature compensation leads to excellent CO₂ measurement accuracy regardless of temperature shifts.

RH and T ….E+E’s RH/T sensing element has a proprietary coating affording protection against contaminants and corrosive agents. In addition the innovative enclosure design prevents electronics exposure to construction site pollution and significantly reduces self-heating.

Analogue or Digital Interface

CO2, RH and T measured data is available via three 0-10V or 4-20 mA analogue outputs, or the RS485 interface with Modbus RTU or BACnet MS/TP protocol. Dew point temperature (Td) can be calculated in the digital version which is configured  using a PC with the free PCS10 Product Configuration Software and an optional configuration adapter.

Measured values can also be read locally on the optional graphic display.

Installation-friendly Enclosure

The CDS201 enclosure design facilitates a rapid and hence more cost-effective installation. The back cover with the push-in spring terminals can be mounted and wired independently of the front cover which accommodates the electronics. Once construction work is completed, the active part can be simply snapped onto the back cover having avoided exposure to potential contamination before commissioning.

Key Features

• Accurate, long-term stable CO2, RH and T measurement
• Dual channel CO2 measurement for long term stability
• RH / T sensing element protected by E+E proprietary coating
• Analogue or Modbus RTU, BACnet MS/TP outputs
• Calculation of dew point temperature Td (Digital config.)
• Snap-on enclosure for time-saving installation
• Large graphic display (optional)
• Easy configuration

Technical Specifications

CO2:
0 – 2000 ppm (accuracy ±60 ppm + 2% mv)
0-5000 ppm (accuracy ±60 ppm + 3% mv)

Humidity:
0-80% RH, non-condensing (accuracy: ±(2.8 + 0.003 * mv) % RH)
80-100% RH, non-condensing (accuracy: ±4.1% RH)

Temperature:
Measurement range: -30…+60 °C
Accuracy: ±0.35 °C , voltage output / RS485
±0.70 °C , current output

Power requirement: 15-35 VDC or 24VAC ±20 %
Outputs:
Analogue: 4-20mA or 0-10V
Digital: RS485 (Modbus RTU or BACnet MS/TP)

Typical Applications

• Building Automation
• Demand Controlled Ventilation
• HVAC in both residential and commercial buildings